This bill mandates the Environmental Protection Agency (EPA) to classify all perfluoroalkyl and polyfluoroalkyl substances (PFAS) , specifically those with at least one fully fluorinated carbon atom, as hazardous air pollutants. The EPA Administrator must issue a final rule for this designation within 180 days of the Act's enactment, adding them to the list under section 112(b) of the Clean Air Act. Subsequently, within 365 days after the final rule is issued, the EPA is directed to revise its list of source categories. This revision will include major and area sources that emit these newly listed PFAS, ensuring comprehensive regulation and control of their release into the environment.